Finding the Fourth Proportional to 42.76, 58.89 and 42.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42.76 : 58.89 = 42.63 : x
2. Step 2: Convert to fraction form
   42.76/58.89 = 42.63/x
3. Step 3: Cross multiply
   42.76x = 58.89 × 42.63
4. Step 4: Simplify right side
   42.76x = 2,510.48
5. Step 5: Solve for x
   x = 2,510.48/42.76
6. Step 6: Final answer
   x = 58.71